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keycloak.go
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keycloak.go
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package main
import (
"bytes"
"encoding/json"
"fmt"
"github.com/cenkalti/backoff"
"io/ioutil"
"net/http"
"crypto/tls"
)
type tokenResponse struct {
AccessToken string `json:"access_token"`
RefreshToken string `json:"refresh_token"`
ExpiresIn int `json:"expires_in"`
RefreshExpiresIn int `json:"refresh_expires_in"`
TokenType string `json:"token_type"`
Scope string `json:"scope"`
SessionState string `json:"session_state"`
NotBeforePolicy int `json:"not-before-policy"`
}
func authenticate(realm string, endpoint string, username string, password string, clientID string, clientSecret string) (string, error) {
tr := &http.Transport{
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
}
client := &http.Client{Transport: tr}
postBody := []byte("username=" + username + "&password=" + password + "&client_id=" + clientID + "&client_secret=" + clientSecret + "&grant_type=password")
resp, err := client.Post(
endpoint+"/realms/" + realm + "/protocol/openid-connect/token",
"application/x-www-form-urlencoded",
bytes.NewBuffer(postBody),
)
if err != nil {
return "", err
}
defer resp.Body.Close()
if resp.StatusCode >= 300 && resp.StatusCode < 500 {
return "", backoff.Permanent(fmt.Errorf("Failed to authenticate with statusCode %d: %s", resp.StatusCode, resp.Status))
}
if resp.StatusCode >= 500 {
return "", fmt.Errorf("Failed to authenticate with statusCode %d: %s", resp.StatusCode, resp.Status)
}
buf, err := ioutil.ReadAll(resp.Body)
fmt.Printf("[DEBUG] Response Body: %s\n", buf)
if err != nil {
return "", backoff.Permanent(err)
}
var tokenResponse tokenResponse
err = json.Unmarshal(buf, &tokenResponse)
if err != nil {
return "", backoff.Permanent(err)
}
return tokenResponse.AccessToken, nil
}
type userRepresentation struct {
CreatedTimestamp int64 `json:"createdTimestamp"`
Email string `json:"email"`
EmailVerified bool `json:"emailVerified"`
Enabled bool `json:"enabled"`
ID string `json:"id"`
Username string `json:"username"`
}
func getUserList(realm string, endpoint string, token string) ([]string, error) {
tr := &http.Transport{
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
}
client := &http.Client{Transport: tr}
groupID, err := getDataSubjectsGroupId(realm, endpoint, token);
if err != nil {
return nil, err
}
req, err := http.NewRequest("GET", endpoint+"/admin/realms/" + realm + "/groups/" + groupID + "/members", nil)
if err != nil {
return nil, err
}
req.Header.Set("Authorization", "Bearer "+token)
resp, err := client.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode >= 300 && resp.StatusCode < 500 {
return nil, backoff.Permanent(fmt.Errorf("Failed to retrieve userList with statusCode %d: %s", resp.StatusCode, resp.Status))
}
if resp.StatusCode >= 500 {
return nil, fmt.Errorf("Failed to retrieve userList with statusCode %d: %s", resp.StatusCode, resp.Status)
}
body, err := ioutil.ReadAll(resp.Body)
fmt.Printf("[DEBUG] Response Body: %s\n", body)
if err != nil {
return nil, backoff.Permanent(err)
}
var userRepresentations []userRepresentation
err = json.Unmarshal(body, &userRepresentations)
if err != nil {
return nil, backoff.Permanent(err)
}
var userList []string
for _, user := range userRepresentations {
if user.Enabled {
userList = append(userList, user.ID)
}
}
return userList, nil
}
type groupRepresentation struct {
ID string `json:"id"`
Name string `json:"name"`
}
func getDataSubjectsGroupId(realm string, endpoint string, token string) (string, error) {
tr := &http.Transport{
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
}
client := &http.Client{Transport: tr}
req, err := http.NewRequest("GET", endpoint+"/admin/realms/" + realm + "/groups?search=data-subjects", nil)
if err != nil {
return "", err
}
req.Header.Set("Authorization", "Bearer "+token)
resp, err := client.Do(req)
if err != nil {
return "", err
}
defer resp.Body.Close()
if resp.StatusCode >= 300 && resp.StatusCode < 500 {
return "", backoff.Permanent(fmt.Errorf("Failed to retrieve data subjects group with statusCode %d: %s", resp.StatusCode, resp.Status))
}
if resp.StatusCode >= 500 {
return "", fmt.Errorf("Failed to retrieve data subjects group with statusCode %d: %s", resp.StatusCode, resp.Status)
}
body, err := ioutil.ReadAll(resp.Body)
fmt.Printf("[DEBUG] Response Body: %s\n", body)
if err != nil {
return "", backoff.Permanent(err)
}
var groupRepresentations []groupRepresentation
err = json.Unmarshal(body, &groupRepresentations)
if err != nil {
return "", backoff.Permanent(err)
}
if len(groupRepresentations) <= 0 {
return "", fmt.Errorf("Failed to retrieve data subjects group")
}
return groupRepresentations[0].ID, nil
}
type applicationListResponse struct {
Applications []policy `json:"applications"`
}
type policyListResponse struct {
Policies []simplepolicy `json:"policies"`
}
func getApplicationPolicies(endpoint string, token string) ([]policy, error) {
tr := &http.Transport{
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
}
client := &http.Client{Transport: tr}
req, err := http.NewRequest("GET", endpoint+"/applications/", nil)
if err != nil {
return nil, err
}
req.Header.Set("Authorization", "Bearer "+token)
resp, err := client.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode >= 300 && resp.StatusCode < 500 {
return nil, backoff.Permanent(fmt.Errorf("Failed to retrieve application policies with statusCode %d: %s", resp.StatusCode, resp.Status))
}
if resp.StatusCode > 500 {
return nil, fmt.Errorf("Failed to retrieve application policies with statusCode %d: %s", resp.StatusCode, resp.Status)
}
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, backoff.Permanent(err)
}
var applications applicationListResponse
err = json.Unmarshal(body, &applications)
if err != nil {
return nil, backoff.Permanent(err)
}
for i, application := range applications.Applications {
req, err = http.NewRequest("GET", endpoint+"/applications/"+application.ID+"/policies", nil)
if err != nil {
return nil, err
}
req.Header.Set("Authorization", "Bearer "+token)
resp, err = client.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode >= 300 && resp.StatusCode < 500 {
return nil, backoff.Permanent(fmt.Errorf("Failed to retrieve application policies with statusCode %d: %s", resp.StatusCode, resp.Status))
}
if resp.StatusCode >= 500 {
return nil, fmt.Errorf("Failed to retrieve application policies with statusCode %d: %s", resp.StatusCode, resp.Status)
}
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, backoff.Permanent(err)
}
var simplepolicies policyListResponse
err = json.Unmarshal(body, &simplepolicies)
if err != nil {
return nil, backoff.Permanent(err)
}
applications.Applications[i].SimplePolicies = simplepolicies.Policies
}
return applications.Applications, nil
}